<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>分类参数</el-breadcrumb-item>
        </el-breadcrumb>

        <el-card>
            <el-alert type="warning" title="注意：只允许为第三级分类选择相关参数！" :closable="false" show-icon>
            </el-alert>
<!--            商品分类-->
            <el-row class="cat_opt">
                <el-col>
                    <span>请选择商品分类：</span>
                    <el-cascader :options="paramsList" :props="cateProps" v-model="selectedCateKeys"
                                 @change="handleChange" :show-all-levels="false" size="mini" clearable
                                 >
                    </el-cascader>
                </el-col>
            </el-row>
<!--            页签-->
            <el-tabs v-model="activeName" @tab-click="handleTabsClick">
                <el-tab-pane label="动态参数" name="many">
                    <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible = true">添加参数</el-button>
                    <el-table :data="manyTableData" border stripe>
<!--                        展开行-->
                        <el-table-column type="expand" label="#">
                            <template v-slot="slot">
                                <el-tag type="primary" v-for="(item,i) in slot.row.attr_vals" :key="i" closable @close="handleClose(i,slot.row)">{{item}}</el-tag>
                                <el-input
                                        class="input-new-tag"
                                        v-if="slot.row.inputVisible"
                                        v-model="slot.row.inputValue"
                                        ref="saveTagInput"
                                        size="small"
                                        @keyup.enter.native="handleInputConfirm(slot.row)"
                                        @blur="handleInputConfirm(slot.row)"
                                >
                                </el-input>
                                <el-button v-else class="button-new-tag" size="small" @click="showInput(slot.row)">+ New Tag</el-button>

                            </template>
                        </el-table-column>
                        <el-table-column type="index" label="#"> </el-table-column>
                        <el-table-column label="参数名称" prop="attr_name"> </el-table-column>
                        <el-table-column label="操作" >
                            <template v-slot="slot">
                                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(slot.row.attr_id)">编辑</el-button>
                                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(slot.row.attr_id)">删除</el-button>
                            </template>
                        </el-table-column>
                    </el-table>
                </el-tab-pane>
                <el-tab-pane label="静态属性" name="only">
                    <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible = true">添加属性</el-button>
                    <el-table :data="onlyTableData" border stripe>
<!--                        展开行-->
                        <el-table-column type="expand" label="#">
                            <template v-slot="slot">
                                <el-tag type="primary" v-for="(item,i) in slot.row.attr_vals" :key="i" closable @close="handleClose(i,slot.row)">{{item}}</el-tag>
                                <el-input
                                        class="input-new-tag"
                                        v-if="slot.row.inputVisible"
                                        v-model="slot.row.inputValue"
                                        ref="saveTagInput"
                                        size="small"
                                        @keyup.enter.native="handleInputConfirm(slot.row)"
                                        @blur="handleInputConfirm(slot.row)"
                                >
                                </el-input>
                                <el-button v-else class="button-new-tag" size="small" @click="showInput(slot.row)">+ New Tag</el-button>

                            </template>
                        </el-table-column>
                        <el-table-column type="index" label="#"> </el-table-column>
                        <el-table-column label="属性名称" prop="attr_name"> </el-table-column>
                        <el-table-column label="操作" >
                            <template v-slot="slot">
                                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog">编辑</el-button>
                                <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
                            </template>
                        </el-table-column>
                    </el-table>
                </el-tab-pane>
            </el-tabs>
        </el-card>

        <el-dialog
                :title="this.activeName==='many'?'添加参数':'添加属性'"
                :visible.sync="addDialogVisible"
                width="50%"
                @close="addDialogClosed">
<!--           修改表单-->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" >
                <el-form-item :label="this.activeName==='many'?'添加参数':'添加属性'" prop="attr_name">
                    <el-input v-model="addForm.attr_name"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addParams">确 定</el-button>
            </span>
        </el-dialog>
        <el-dialog
                :title="activeName==='many'?'修改参数':'修改属性'"
                :visible.sync="editDialogVisible"
                width="50%"
                @close="addDialogClosed">
<!--           修改表单-->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" >
                <el-form-item :label="this.activeName==='many'?'修改参数':'修改属性'" prop="attr_name">
                    <el-input v-model="addForm.attr_name"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editParams">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        name: "params",
        data(){
            return{
                paramsList:[],
                cateProps:{
                    value:'cat_id',
                    label:'cat_name',
                    children:'children'
                },
                selectedCateKeys:[],
                activeName:'many',
                //动态参数
                manyTableData:[],
                //静态属性
                onlyTableData:[],
                addDialogVisible:false,
                addForm:{
                    attr_name:''
                },
                addFormRules:{
                    attr_name:[
                        {required: true, message: '请输入', trigger: 'blur'}
                    ]
                },
                editDialogVisible:false,
                inputVisible:false,
                inputValue:''

            }
        },
        created() {
            this.getParamsList();
        },
        methods:{
            async getParamsList(){
                const{data:res}=await this.$http.get("categories");
                if(res.meta.status!==200){
                    return this.$message.error("获取商品分类失败");
                }
                this.paramsList=res.data;
                // console.log(res);
            },
             handleChange(){
                this.getParamsData();
                // console.log(this.selectedCateKeys);
            },
            handleTabsClick(){
                this.getParamsData();
            },
            async getParamsData(){
                if(this.selectedCateKeys.length!==3){
                    this.selectedCateKeys=[];
                    this.manyTableData=[];
                    this.onlyTableData=[];
                    return
                }
                const {data:res}=await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:this.activeName}});
                if(res.meta.status!==200){
                    return this.$message.error("获取参数列表失败")
                }
                res.data.forEach(item=>{
                   item.attr_vals=item.attr_vals ?item.attr_vals.split(" "):[];
                   item.inputVisible=false;
                   item.inputValue='';
                });

                if(this.activeName==='many'){
                    this.manyTableData=res.data;
                }else{
                    this.onlyTableData=res.data;
                }
                console.log(res);
            },
            addDialogClosed(){
                this.$refs.addFormRef.resetFields();
            },
            addParams(){
                this.$refs.addFormRef.validate(async valid=>{
                    if(!valid) return;
                    const{data:res}=await this.$http.post(`categories/${this.cateId}/attributes`,{attr_name:this.addForm.attr_name,attr_sel:this.activeName});
                    if(res.meta.status!==201){
                        return this.$message.error("添加失败");
                    }
                    this.$message.success("添加成功");
                    this.addDialogVisible=false;
                    this.getParamsData();

                })
            },
            async showEditDialog(id){
                const {data:res}=await this.$http.get(`categories/${this.cateId}/attributes/${id}`);
                console.log(res);
                this.addForm.attr_name=res.data.attr_name;
                this.editDialogVisible=true
            },
            async removeParams(id){
                const confirmResult=await this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).catch(err=>err);
                if (confirmResult!=="confirm"){
                    return this.$message.info("已取消删除");
                }
                const {data:res}=await this.$http.delete(` categories/${this.cateId}/attributes/${id}`);
                console.log(res);
                if(res.meta.status!==200){
                    return this.$message.error("删除失败")
                }
                this.$message.success("删除成功");
                this.getParamsData();
            },
            editParams(id){

            },
            async handleInputConfirm(row){
                if(row.inputValue.trim().length===0){
                    row.inputValue='';
                    row.inputVisible=false;
                    return
                }
                row.attr_vals.push(row.inputValue.trim());
                row.inputValue='';
                row.inputVisible=false;
                this.saveAttrVals(row);
            },
            async saveAttrVals(row){
                const {data:res}=await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
                    attr_name:row.attr_name,
                    attr_sel:row.attr_sel,
                    attr_vals:row.attr_vals.join(' ')
                });
                if(res.meta.status!==200){
                    return this.$message.error("添加失败")
                }
                this.$message.success("添加成功");
                // console.log("ok")
            },
            showInput(row){
                row.inputVisible=true;
                this.$nextTick(_ => {
                    this.$refs.saveTagInput.$refs.input.focus();
                });
            },
            handleClose(i,row){
                row.attr_vals.splice(i,1);
                this.saveAttrVals(row);
            }


        },
        computed:{
            isBtnDisabled(){
                return this.selectedCateKeys.length !==3;
            },
            cateId(){
                if(this.selectedCateKeys.length===3){
                    return this.selectedCateKeys[2];
                }
                return null;
            }
        }


    }
</script>

<style lang="less" scoped>
    .el-breadcrumb{
        padding: 15px;
    }
    .el-card{
        margin-top: 15px;
    }
    .cat_opt{
        margin: 15px 0;
    }
    .el-tag{
        margin:0 10px;
    }
    .input-new-tag{
        width: 120px;
    }
</style>
